We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Origin of reduced magnetization and domain formation in small magnetite nanoparticles.
- Authors
Nedelkoski, Zlatko; Kepaptsoglou, Demie; Lari, Leonardo; Wen, Tianlong; Booth, Ryan A.; Oberdick, Samuel D.; Galindo, Pedro L.; Ramasse, Quentin M.; Evans, Richard F. L.; Majetich, Sara; Lazarov, Vlado K.
- Abstract
The structural, chemical, and magnetic properties of magnetite nanoparticles are compared. Aberration corrected scanning transmission electron microscopy reveals the prevalence of antiphase boundaries in nanoparticles that have significantly reduced magnetization, relative to the bulk. Atomistic magnetic modelling of nanoparticles with and without these defects reveals the origin of the reduced moment. Strong antiferromagnetic interactions across antiphase boundaries support multiple magnetic domains even in particles as small as 12-14 nm.
- Publication
Scientific Reports, 2017, p45997
- ISSN
2045-2322
- Publication type
Article
- DOI
10.1038/srep45997